F. Merkt

activity

20142024

most citedExperimental characterization of singlet scattering channels in long-range Rydberg molecules

93 citations · 324 across the 10 of their papers we have counts for

collaborators

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6 papers · 1 filter

physics.atom-ph2024

The Zero-Quantum-Defect Method and the Fundamental Vibrational Interval of H $_{2}^{+}$

Ioana Doran, Nicolas Hölsch, Maximilian Beyer +1

The fundamental vibrational interval of H $_{2}^{+}$ has been determined to be $Δ G_{1/2} = 2191.126 614 (17)$ cm $^{- 1}$ by continuous-wave laser spectroscopy of Stark manifolds of Ry…

physics.atom-ph2022★ 11 cited

Precision millimetre-wave spectroscopy and calculation of the Stark manifolds in high Rydberg states of para-H $_{2}$

Nicolas Hölsch, Ioana Doran, Maximilian Beyer +1

Precision measurements of transitions between singlet ( $S = 0$ ) Rydberg states of H $_{2}$ belonging to series converging on the $X^{+}^{2} Σ_{g}^{+} (v^{+} = 0, N^{+} = 0)$ state of H $_{2}^{+}$ ha…

physics.atom-ph2021★ 27 cited

Multipole-moment effects in ion-molecule reactions at low temperatures: part I -- Ion-dipole enhancement of the rate coefficients of the He $^{+}$ + NH $_{3}$ and He $^{+}$ + ND $_{3}$ reactions at collision energies near $0$ K

Valentina Zhelyazkova, Fernanda B. V. Martins, Josef A. Agner +2

The energy dependence of the rates of the reactions between He $^{+}$ and ammonia (NY $_{3}$ , Y= {H,D}), forming NY $_{2}^{+}$ , Y and He as well as NY $^{+}$ , Y $_{2}$ and He, and the corresponding…

physics.atom-ph2021★ 37 cited

Ion-molecule reactions below 1~K: Observation of a strong enhancement of the reaction rate of the ion-dipole reaction He $^{+}$ + CH $_{3}$ F

Valentina Zhelyazkova, Fernanda B. V. Martins, Josef A. Agner +2

The reaction between He $^{+}$ and CH $_{3}$ F forming predominantly CH $_{2}^{+}$ and CHF $^{+}$ has been studied at collision energies $E_{coll}$ between 0 and $k_{B} \cdot 10$ ~K in a me…

physics.atom-ph2014★ 93 cited

Experimental characterization of singlet scattering channels in long-range Rydberg molecules

Heiner Saßmannshausen, Frédéric Merkt, Johannes Deiglmayr

We observe the formation of long-range Cs $_{2}$ Rydberg molecules consisting of a Rydberg and a ground-state atom by photoassociation spectroscopy in an ultracold Cs gas near 6s$_{1/…

physics.atom-ph2014★ 44 cited

Observation of dipole-quadrupole interaction in an ultracold gas of Rydberg atoms

Johannes Deiglmayr, Heiner Saßmannshausen, Pierre Pillet +1

We observe the direct excitation of pairs of Cs atoms from the ground state to molecular states correlating asymptotically to $n s n^{'} f$ asymptotes. The molecular resonances are int…

The Zero-Quantum-Defect Method and the Fundamental Vibrational Interval of H2+​

Precision millimetre-wave spectroscopy and calculation of the Stark manifolds in high Rydberg states of para-H2​

Multipole-moment effects in ion-molecule reactions at low temperatures: part I -- Ion-dipole enhancement of the rate coefficients of the He+ + NH3​ and He+ + ND3​ reactions at collision energies near 0 K